Reiß, Markus; Todorov, Viktor; Tauchen, George Eugene - 2014
as the ratio of the continuous covariation between an asset and observable risk factor (e.g., the market return) and the … estimate of the residual component of the asset returns that is orthogonal (in martingale sense) to the risk factor. Our test … covariation between the risk factor and the estimated residual component of the asset returns over blocks with asymptotically …